This is an older reference, but in Bigelow and Schroeder's Fishes of the Gulf of Maine (1953) they state the heaviest striped bass were about 125lbs and were taken at Edenton, NC, April 1891 - and here is the kicker - <b>there were several of that size taken</b>. They cited a paper from 1907 by Smith of the North Carolina Geol. and Econ. Surv., vol 2, 1907, p.271.

For some reason the 128lb figure also sticks out in my mind.

B&S also report one taken at Orleans that weighed 112lbs, although no additional info is provided.